A spokeswoman for an Auckland-based international travel company said they had been contacted about a crash near Rotorua this morning.

"We received reports from our driver. At the moment we don't know the extent of things and we are busy trying to sort things out."

A spokeswoman from Kuranui Wilderness Lodge and Trophy Park said the crash was east of its premises and she had seen multiple police and ambulance vehicles going past and two helicopters in the air.

Information on injuries is not yet available.

St John was notified of a serious crash involving a bus on SH 5, Ngatira at 11:19 am. We have dispatched five helicopters, three ambulances and a manager to the scene. We are assessing patients and will update with any further information as it comes to hand.